Fire extinguisher mounting bracket for vibration service



Oct. 27, 1959 w. M. HAESSLER 2,910,262

FIRE EXTINGUISHER MOUNTING BRACKET F OR VIBRATION SERVICE Filed May 5,1953 2 Sheets-Sheet l INVENTOR. W4 L TERM M45534 5/? A T TOANE Y Oct.27, 1959 w. M. HAESSLER FIRE EXTINGUISHER MOUNTING BRACKET FOR VIBRATIONSERVICE Filed May 5, 1953' 2 Sheets-Sheet 2 INVENTOR. WAL r5? M M45351.19

A TTOR/Vf Y United States Patent FIRE EXTINGUISHER MOUNTING BRACKET FORVIBRATION SERVICE Walter M. Haessler, Chatham, N.J., assignor, by mesneassignments, to The Fyr-Fyter Company, Dayton, Ohio, a corporation ofOhio Application May 5, '1953, Serial No. 353,114

3 Claims. (Cl. 248-304) The present invention relates to an improvedportable fire extinguisher mounting bracket particularly suitable forvibration service.

A mounting bracket for portable fire extinguishers in common use has anapertured mounting lug extending from the extinguisher valve and adaptedto be hung on a wall hook. The fire extinguishers carried by suchbrackets on vehicles or kept in factories or other places wherevibration is present have been found to have their mounting lugs badlyworn.

The present invention aims to overcome the difiiculties presented by theprior mounting brackets by providing an improved mounting bracketresistant to wear under vibration service.

Another object of the invention is to provide an im proved mountingbracket which is simple and economical in manufacture, efficient inoperation, and durable in use.

In accordance with the invention this is accomplished by providing amounting bracket incorporating centering means preventing lateraldisplacement of the mounting lug without a lifting action, thus, adamping effect is provided preventing the lateral movement which causes7 wear.

Other objects and advantages of the invention will be apparent from thefollowing description and from the accompanying drawings which show, byway of example, an embodiment of the invention.

In the drawings:

Figure 1 is a side view of a portable fire extinguisher in position on amounting bracket in accordance with the invention.

Figure 2 is a top view of the outwardly extending portion of themounting bracket.

Figure 3 is a side view corresponding to Figure 2.

Figure 4 is a side view of the mounting bracket including a downwardlyextending guideway portion thereof.

Figure 5 is an end view corresponding to Figure 4.

Figure 6 is a top view corresponding to Figure 4.

Referring to the drawings, there is shown a portable fire extinguisher 1secured in position to a wall 2 by a mounting bracket 3 in accordancewith the invention.

The mounting bracket 3 includes a wall member 4 having an outwardlyextending portion 5 at the end of which is an upwardly extending pinmember 6. The pin member 6 is adapted to be received in an aperturedmounting lug 7 extending outwardly from valve 8 of the extinguisher 1.In order to prevent swinging of the extinguisher when carried by themounting bracket, a downwardly extending side member 10 may be providedhaving at its lower end outwardly extending clip members 11 and 12.

The wall member 4 may be made of strap metal shaped as illustrated withthe outwardly extending portion or extension 5 at approximately rightangles to the wall member 4. Reinforcing ribs 14 and 15 may be formedfor the stiffening of the shaped bracket. Adjacent the outer end of theextension 5 is an aperture in which is received the pin member 6. Thepin member 6 has a 2,910,262 Patented Oct. 27, 1959 ice lower downwardlyextending portion of reduced diameter adapted to fit in the aperture ofthe extension 5, the lower end 16- of the pin member being peened overto secure the pin member in position. The lower portion of the pinmember 6 is enlarged and formed with an inclined surface 17 while themain body of the pin member 6 is made with a straight verticallyextending wall having its top rounded as indicated at 18 to facilitatethe entry of the pin member into the aperture of the mounting lug 7.

In accordance with the invention the inclined surface 17 is made withits upper diameter somewhat smaller than the diameter of the aperture inthe mounting lug 7 while its lower diameter is somewhat larger than thediameter of the aperture. The inclined surface 17 is preferably madewith an angle of about forty-five degrees with respect to the verticalas this is a convenient angle for machine fabrication. The structure inaccordance with the invention is to provide a centering means on thebracket, such as will prevent lateral displacement of the aperturedmounting lug unless accompanied by a lifting action. This isaccomplished by providing the inclined surface 17 of at least a minimumangular deviation from the vertical to engage with the wall of theaperture in the mounting lug 7. Preferably the wall of the aperture inthe mounting lug 7 is formed with a surface of about forty-five degreesdeviation from the vertical. However, it is not necessary that theangular surface be provided on the mounting lug 7 as a suitable surfacewill be worn therein after a short amount of use. It is believed thatthe work involved in lifting the mounting lug, or tending to lift themounting lug under vibration service, achieves a damping'effect so thatthere is no appreciable Wear between the inclined surface 17 and themounting lug 7. A sufficient angular deviation from the vertical isnecessary to prevent a wedge action which might take place if the angleis too small or less than fourteen degrees. The coefficient of frictionis expressed as the tangent of the angle of repose for a block on aninclined surface. In the case of steel on steel, the coefiicient isapproximately .25 which is approximately the tangent of fourteendegrees. Accordingly, the inclined surface should have an angle greaterthan fourteen degrees in order to prevent a wedge effect, the forty-fivedegree angle being preferably used, as stated above, for facility inmachining.

The wall member 4 is apertured as indicated at 20 and the side member 10is apertured as indicated at 21 to receive bolts or screws to secure thebracket in position on the wall. The clip members 11 and 12 may beformed of a single piece of material apertured and secured to the lowerend of the side member 10 by rivets 24 and 25. The outer end of the clipmembers 11 and 12 may be turned outwardly as indicated at 26 and 27 tofacilitate the insertion of the container of the extinguisher 1.

While the invention has been described and illustrated with reference toa specific embodiment thereof, it is obvious that other embodiments maybe resorted to without departing from the invention. For example, whilethe pin member 6 has been shown having an enlarged lower portionproviding the inclined portion 17, it is obvious that a washer membermight be placed over the pin member 6, the surface 17 being provided onthe exterior of the washer member. Further, while the pin member 6 hasbeen shown as secured in position by peening over its lower end, asindicated at 16, other structures might be utilized, such as the use ofa nut on a threaded lower end of an alternative pin member 6. Anotherstructure might be made by a stamping operation in which the pin member6 and inclined surface 17 are stamped from the outwardly extendingextension 5. Therefore, the form of the invention set out above shouldbe considered as illustrative and not as limiting the scope of thefollowing claims.

I claim:

1. A mounting bracket for vibration service to receive an aperturedmounting lug comprising a wall member, an outwardly extending extensionfor the wall member, the extension being apertured adjacent its outerend, and an upwardly extending pin member secured in position in theapertured extension, the lower portion of the pin member having aninclined centering surface making an angle of at least fourteen degreeswith the vertical for support of the apertured mounting lug, the upperportion of the pin member of generally cylindrical shape and having adiameter smaller than the diameter of the inclined portion and smallerthan the diameter of the aperture in the mounting lug, the outward endof the pin member rounded to facilitate entry into the aperturedmounting lug whereby lateral displacement of the apertured extensionproduces a lifting action.

2. A fire extinguisher mounting bracket for vibration service to receivean apertured mounting lug of a fire extinguisher, the mounting bracketcomprising a wall member, an outwardly directed extension for the wallmember, the extension apertured adjacent its outer end, an upwardlyextending pin member secured in position in the apertured extension, thepin member adapted to loosely fit the aperture of the mounting lug, andan annular supporting member about the pin member on the upper surfaceof the wall member extension, the supporting member having an annularsupporting surface inclined at an angle of at least fourteen degreesfrom the vertical position and terminating on its upper end against thepin member, whereby lateral displacement of the apertured mounting lugproduces a lifting action.

3. A fire extinguisher mounting bracket for vibration service to receivean apertured mounting lug of a fire extinguisher, the mounting bracketcomprising a wall member, an outwardly directed extension for the wallmember, an upwardly extending pin member secured to the extension, thepin member adapted to loosely fit the aperture of the mounting lug, andan annular supporting member about the pin member on the upper surfaceof the wall member extension, the supporting member having an annularsupporting surface inclined at an angle of at least fourteen degreesfrom the vertical position, whereby lateral displacement of theapertured mounting lug produces a lifting action. 1

References Cited in the file of this patent UNITED STATES PATENTSFOREIGN PATENTS Great Britain of

